<template>
  <div class="big">
      <div class="box1"></div>
      <div class="box2"></div>
      <div class="box3" style="width:1920px;background: skyblue;"></div>
  </div>
</template>
 
<script>
export default {
    
}
</script>
 
<style scoped>
    .big {
        width: 100vw;
        height: 100vh;
        background: yellowgreen;
    }
    
    .big div {
        height: 100px;
    }
    
    .big img {
        width: 710px;
        height: 400px;
    }
    
    .box1 {
        width: 960px;
        background: tomato;
    }
    
    .box2 {
        width: 1920px;
        background-color: darkred;
    }
</style>